MINISTRY OF EDUCATION SECONDARY ENGAGEMENT PROGRAMME GRADE 11 BIOLOGY Week 3 Lesson 1: Worksheet 1 Instructions: Circle the letter that corresponds with your chosen answer 1. Phototropism and geotropism are responses to stimuli by plants. Which of the following best represent the type of stimulus plants respond to in phototropism and geotropism respectively? (A) Photosynthesis and moisture (B) Water and light (C) Light and gravity (D) Warmth and water 2. A chemical substance that causes plants to elongate and grow cells faster from the part that is farthest from light is known as? (A) Axon (B) Chromatin (C) Autotrophs (D) Auxin 3. Growth triggered by contact in plants is known as? (A) Thermonasty (B) Nyctinasty (C) Non-directional response (D) Hyponasty 4. Growth movement produces by plants when they respond to a stimulus is known as? (A) Thigmotactic (B) Tropism (C) Hydrotropism (D) Taxic movement 5. Flies and cockroaches move away from light. This response is known as? (A) Negative phototaxis (B) Positive phototaxis (C) Negative chemotaxis (D) Positive aerotaxis 6. The main importance of responding adequately to stimuli is? (A) Reproduction (B) Survival (C) Growth (D) Adaptation Question 7 refers to the following diagram (image from biology for csec examination 3rd edition-Macmillan) 7. The diagram above represents which of the following? (A) Geotropism (B) Negative phototropism (C) Positive phototropism (D) Positive phototaxis Question 8 refers to the following diagram. 8. The diagram above accurately represents which of the following? (A) Thermonasty (B) Seismonasty (C) Hydronasty (D) Tropism Question 9 refers to the diagram below (A) (B) (C) (D) 9. Which of the label A, B, C or D represent negative geotropism? 10. Which of the following is a response? (A) Sunlight (B) Moisture (C) Taxis (D) chemical MINISTRY OF EDUCATION SECONDARY ENGAGEMENT PROGRAMME GRADE 11 BIOLOGY Week 3 Lesson 1: Worksheet 1- Answer sheet Multiple-choice questions 1. C 2. D 3. D 4. B 5. A 6. B 7. C 8. B 9. A 10. C .